| From 11/1954 to 08/1963 | ARVN Chief of Joint General Staff |
| The only recipient of ARVN First Class of National Honor Medal. | |
| 10/ 21/ 1964 | Promoted to Marshal. |
| 12/08/ 1956 | Promoted to General. |
| 05/03/ 1955 | Promoted to Lieutenant General. |
| 11/1954 | Promoted to Major General. |
| From 1951 to 11/1954 | Colonel, I Military Region Commander. |
| From 1949 to 1951 | Lieutenant Colonel, assigned to the Defense Ministry. |
| From 1948 to 1949 | Major, Chief of Cabinet of Prime Minister. |
| From 10/1947 to 1948 | Captain, Attache Officer of Prime Minister. |
| 1942/1943 | Lieutenant, Battalion Commander at 43rd Regiment. |
| From 1923 to 1930 | Former Sons-of-Troops Cadet of Thu Dau Mot |
Nhan Hữu Hiệp